Portion of a footwear sole



FIG. 1 is a front view of a portion of a footwear sole;

FIG. 2 is a first side view of the portion of the footwear sole of FIG. 1;

FIG. 3 is a bottom view of the portion of the footwear sole of FIG. 1; and,

FIG. 4 is a second side view of the portion of the footwear sole of FIG. 1.

The ornamental design that is claimed is shown in solid lines only in the drawings and not the surfaces within the solid lines. The broken (dashed) lines shown in FIGS. 1 through 4 are included for the purpose of illustrating environmental elements only and form no part of the claimed design. 

We claim the ornamental design for a portion of a footwear sole, as shown and described. 